Concrete-mixing machine



Feb. 19 1924.

G. JAEGER CONCRETE MIXING MACHINE Filed .April 27. 1925 7ZWGEBHARD JAEGER 15 Patented Feb. 19, 1924.

UNITED STATES GEBHARD JAEGER, or'coLUMB s, c1110." r e 1! CONCRETE-MIXING MACHINE.

Application filed April 27, 1923. Serial1511i.-.634,996i-.

To all it may concern.- 7 Be it known that I, GEBHARD- JAEGE a citizen ofthe United States, residing at 'means whereby the oscillation of the drum may be conveniently accomplished.

The invention is embodied in the example herein shown and described, the features of novelty being finally claimed.

In the accompanying drawing Figure 1 is a side view showing a mixer equipped with the invention.

Fig. 2 is a top plan view showing as far as may be in such a view the details of the invention.

In the views 5 designates the mixing drum which is of a usual type and having a single charging and discharging opening at 5 The mixing drum is mounted centrally at its bottom to turn axially on a swinging yoke 6 supported in bearings ona suitable frame 4; and said drum has a circumferential rack to be engaged by a suitable inion (not shown) for turning it, it not eing necessary to show the details of that because not a part of the present invention. One of the trunnions of the swinging yoke 6 has fixedly connected to it a tubular member 7 the opening of which stands at right angles to the axis of the trunnion, and through this opening is extended one arm 8 of a bent rod. This arm 8 of the bent rod is secured to the tubular member by means of a collar 15 fixed with a set screw 15 to the rod so that the arm 8 is capable of rocking on its axis in the tubular member. The other arm 8 of the bent rod can therefore oscillate or swing back and forth in a plane at an angle to the axis of the arm 8. The tubular member 7 has a projecting stop 7 cast with it to limit the oscillation of the arm 8 outward from the drum.

Mounted on the top of the trunnion-bearing 3 is a casting or member 9 the base of vention as claimed.

which is provided with slots 10 through which bolts 11 are passed to secure the caste ing to the trunnion bearing. 'By thisme ans the member 9 is rendered adjustable so that the mixing, position of the druIn-can be PATENT. OFFICE changed. The, member 9 has two lugs'yl2 and 13 the latter being the longer, said-lugs forming a bifurcate. stop, the lugs being spacedsufficientlv to allow. the arm 8? tol stand between them.

' The member 9 has a: stop 14 a ainst which" the yoke strikes to'limit the extreme movement tion.

When the arm 8 is placed between the lugs 12 and 13, as shown in full lines in both the views, the mixing drum is held in charging and mixing position, and the workman can so leave it to charge the drumand to turn the drum to mix the charge. After drawing the arm 8? out, from between the lugs 12 and 13 the drum can be swung over to the left to discharging position indicated by broken lines Fig. 1. In thus of the yoke and drum in either direcswinging the drum over to discharging position the workman uses arm 8 and 8 in succession in the order stated and in bringing the drum back to charging and mixing position he uses them in succession in reverse order. The lug 13 also serves to arrest the drum wh'en swungv to mixing position.

The forms of the'parts can be changed without departing from the gist of the in- WhatI claim is: I 1. In a mixing machine, the combination of a supporting frame, a mixing drum, a

supporting yoke for, the drum having a trunnion turning in said frame, a pair of arms connected with the'trunnion for swinging the drum, one of said arms mounted to swing toward and from the frame, and a' stop with which said arm may be engaged to arrest the same. 1 p

2. In a mixing machine, the combination of a supporting frame, a mixing drum, a supporting yoke for the drum having a trunnion turning in said frame, a tubular member secured to said trunnion anda bent bar formin two arms for swinging the trunnion and drum, said bar secured by one of its arms to rock on its axis in said tubular member while the other swings toward and from the drum;

3. In a mixing .machine, the combination of a su-ppor-tingfrarne, a mixing drum, a supporting yoke for the drumhaving a trunnion turning in said frame, atubular member secured to said trunnion; a bent bar forming tWo arms for swinging the trunnion and drum, said bar secured one of its arms in said tubular member to turn on its axis in said tubular member while the other swings toward and from the drum and a bifureate stop into which said other arm can swing. g

4'. In a mixingnnaclii'ne, the combination of a supporting frame, a mixing drum, a supporting yoke for theur'um having; a trunnion turning in said'fiam'e; a tubular member secured to said trunnion, a bent bar formin two arms for swineing' the amnion and drum, said bar seem-Gaby one of its in saidtubular membertc'r' tlifn on its axis in said tubular member" While" the other swings toward and from the drum and an afiji'istable step into which said otner arm can swing.

5: In a mixing machine, the combination and drum, said an secured by one of its arms in said tubiilar m mber tojturn onits axis in said tubular member While the' other swings aware and from the (mm, a time Cate stop into- WHi'ch said other arm can swin inwardly toward the mlxing drum and means the tubnlar'membr for limit ing the outward swing of said arfii from the mlii'ingi drum.

GEB'HARD JAEGER; 

